GAINZA There is a small village named Gainza in the basque province of
Gipuzkoa, and other small village in the Northwest of Navarre (near the
border of Gipuzkoa), both villages are not far one for another, the basque
names of tem are GAINTZA.

House in gainza Gipuzkoa with branches in Irun, 3 houses in Itziar (Deba),
Tolosa (all in Gipuzkoa). House in Zeanuri (Bizkaia). Other house in Gainza
(Araiz) in Nabarra, with branches in Villafranca, Villanueva del valle,
Irunea-Pamplona, and Ollo (In Navarre).

Meaning: Place with a lot of mountains. GAIN means in basque :Over, but
also the higher part of a mountain, the sufix ZA or TZA means abundance.